Recent Talks

Digital Media: The Ins and Outs
Various Locations and Dates

Download Talk Slides (pdf)

Synopsis: More and more frequently forensic video specialists have to analyze video and audio that comes to them in the form of a digital video file. Sometimes these files can be easily imported into a forensic system; sometimes they refuse to import; sometimes they import on one machine and not another; and sometimes they import but look corrupted, slow the system down or cause the system to crash. Related issues arise for the specialist who wants to be able to export and share these or other video files. These files not only need to be of high quality but they also need to be compatible with the recipient's computer.

By considering how digital files look to and are dealt with by the computer, this session will offer the user insights that will help eliminate the guess work of deciding what to do in these situations. We will explore the digital representation of video and audio, video and audio codecs, media file formats and the facilities both within forensic applications and within the computer systems themselves that play a role in dealing with media data.

Using Screen Capture to get at DVR data: The Inside Story
Various Locations and Dates

Synopsis: The goal of this training is to provide those of you who have to deal with DVRs the knowledge needed to help make more informed choices when using screen capture to collect your video evidence. In this non-product specific discussion we will cover issues such as; how do camera, screen refresh and captured movie frame rates interact, what happens to time lapse video, how are player size and capture file frame size related, what are "Direct X" players, do display settings matter, what about aspect ratio, etc. Presented as a end to end tour of the screen capture process the aim is to have a discussion at a technical level appropriate for anybody who has the need to "screen capture" video and has questions about how the process works.